Artificial denture



I. WEI NTRAUB,

ARTIFICIAL DENTURE.

APPLICATION FILED 0420.21, 1920.

1,369,509. Patented Feb. 22,1921.

PAT ENT OFFICE.

ISAAC WEINTIAUB, I)! NEW HAVEN, CONNECTICUT.

ARTIFICIAL nnn'ruma Specification of Letters Patent.

Application filed December 21, 1920. Serial No. 432,201.

To all whom it may concern Be it known that I, IsAAo WEINTR'AUB, acitizen of the United States, residing at New Haven, in the county ofNew Haven and'Stateof Connecticut, have invented a new and usefulImprovement in Artificial Dentures; and I do hereby declare thefollowing, when taken in connection with the accompanying drawings andthe characters of reference marked thereon, to be a full, clear, andexact description of the same, and which said drawings constitute partof this application, and represent, in

' Figure 1, a perspective view of a backing for artificial teethconstructed in accordance with my invention.

Fig. 2, a rear view of a facing detached.

Fig. 3, a perspective view of a backing with a facing applied thereto.

Fig. 4, a transverse sectional view, showing my improvement, as appliedbetween two permanent teeth.

Fig. 5, a perspective view of another form of backing, embodying myinvention.

Fig. 6, a perspective view of the same, with a facing applied thereto.

This invention relates to an improvement 'in artificial denture, andparticularly to that type which include a backing to which a porcelaincrown, body, or veneer is attached.

n the more general practice, these backings are secured in place byconnecting them with crowns, or caps, which are placed over the teethadjacent .to the space which is to be filled.

The object of this invention is to so construct the metal back that itmaybe connected with adjacent teeth without the use of caps, or similardevices, and the inven-' tion consists'in the construction ashereinafter described, and particularly recited in the claim.

In car ing out my invention I em loy a back 10, ormed on opposite sideswit ribs 11, and on its face with the usual projection 12, to which theporcelain face 13 is at; tached. In use, the teeth 14fand 15, onopposite sides of the space to be filled, are formed of verticalchannels 16, to receive the ribs 11, which are preferably round. In thisway the back is not only anchored in proper position, but the backforms-a firm connection betweenthe permanent teeth, so that, in effect,those teeth" are strengthened to bear the strain of the false toothlocated between them. If desired, the ribs may be embedded ingutta-percha, or othersuitable material, in order to make a ermanentconnection.

11 Figs. 5 and 6 of the drawings I have illustrated a back adapted formolars, these Patented Feb. 22,1921.

backs 17 being provided with ribs 18 on opposite sides, acting in thesame manner as the ribs in the construction before described. It will,therefore, be understood that the form of the back may be variedaccordin to the character of the facing to be applie but in every casewill be provided on opposite sides with ribs.

Iclaim: I

1. An artificial tooth attachment consisting of a metal back, formedwith a rib-on the edge of each side.

2. An. artificial tooth attachment consisting of a metal backing formedonopposite S1 e s with vertically arranged ribs. v 3. An artificialtooth attachment cornprising a metal backing, formed on opposite sideswith vertically arranged ribs, and in one face with a projectioncombined with a facing adapted to engage with said projection.

In testimony whereof, I have signed this specification in the scribingwitnesses.

, ISAAC .WE-INTRAUB.

Witnesses:

Fnnonnro O. EARLE, I P. M. F. EICHMANN.

presence, of two sub

